Rare Birds In The Netherlands In 2012

This is the 33rd annual report on rare birds in the Netherlands to be published in Dutch Birding. It comprises records from 2012 as well as belated and reconsidered records, dating back to 1844, which have been evaluated by the Dutch rarities committee, the Commissie Dwaalgasten Nederlandse Avifauna (CDNA). Several 2012 reports are still under review or awaiting submission and could therefore not be included. In addition, some reports for 2011 and earlier years are still under consideration for various reasons. The increase in records entered online on internet portals such as www.waarneming.nl reveals many new details about past records. For the sake of completeness, date extensions are presented in this report.

Details included for each record are, if available: date(s); location and/or municipality (municipal divisions as on 1 January 2013); province; number of birds if more than one, plumage and sex; type of record if trapped, photographed, sound-recorded, videoed or found dead (and where specimen is stored, if known); names of up to three observers involved in finding, identifying and recording, and relevant references in the literature, which normally include (inter)national but not regional journals, and published photographs. A compilation of most rarities videoed can be found in Plomp (2013). Records from 2011 lasting into 2012 that already have been published in the 2011 report (Ovaa et al 2012) are repeated here without reference. Observations not (yet) submitted but mentioned in the 2011 report are not repeated in this report. The sequence of the records in the species accounts is from the current year backwards, with records within one year presented chronologically. Numbers after each (sub)species' name refer to the total number of individuals 1 from 1 January 1800 to 31 December 1979, 2 since 1 January 1980 but excluding 3 the current year. Taxa marked with an asterisk * are new to the Dutch list.

The following CDNA members voted on some or all of the records in this report: Rob S A van Bemmelen, Nils van Duivendijk, Dick Groenendijk (chairman), Arjan Ovaa, Willem van Rijswijk (secretary), Roy Slaterus, Arend Wassink and Rik Winters. Max Berlijn and Marcel Haas supported the committee as non-voting archivists and assisted in submitting many reports published on national and regional websites. Reports can be submitted, preferably using the electronic submission form on www.dutchavifauna.nl or filling in this form after entering a record on www.waarneming.nl. Reports can also be sent by ordinary mail to CDNA, Duinlustparkweg 98A, 2082 EG Santpoort-Zuid, the Netherlands, preferably using the online submission forms at www.dutchavifauna.nl; this online database contains all records of rare birds up to 2012 (cf Dutch Birding 34: 346, 2012). Here, also recently accepted records or rejected reports as well as reports currently under review are listed. Decisions regarding taxonomy have been delegated to the Dutch committee for avian systematics (Commissie Systematiek Nederlandse Avifauna; CSNA), which on 1 January 2012 consisted of the following members: Arnoud B van den Berg, André J van Loon, C S (Kees) Roselaar and George Sangster (secretary).

In 2012, at least 360 species were recorded, which is a few species below the average of 363 over the last 10 years. This number may rise depending on pending reports. The only record of Bearded Vulture Gypaetus barbatus, in June 2002, was rejected after review (identification accepted but not meeting criteria for acceptance as wild bird). Two taxa were new to the Dutch list in 2012: Sooty Tern Onychoprion fuscatus and Caspian Stonechat Saxicola maurus hemprichii. With Sooty Tern added and Bearded Vulture deleted, the Dutch list now numbers 504 species. Note, however, that a record of Stejneger's Stonechat S stejnegeri on 8-23 October 2012 on Texel, Noord-Holland, is still under review; this may become another new species for the Dutch list. Other highlights for 2012 included the second Steppe Grey Shrike Lanius lahtora pallidirostris, second and third Eastern Black Redstart Phoenicurus ochruros phoenicuroides, third Bufflehead Bucephala albeola, fifth Bonaparte's Gull Chroicocephalus philadelphia, sixth and seventh Black-winged Kite Elanus caeruleus (both twitchable), sixth to eighth Baird's Sandpiper Calidris bairdii (all three twitchable), seventh Eurasian Pygmy Owl Glaucidium passerinum, eighth Lesser Spotted Eagle Aquila pomarina and Black-throated Thrush Turdus atrogularis and ninth (but only third to be seen alive and first twitchable) Thick-billed Murre Uria lomvia. In addition, 2012 was a good year for Western Bonelli's Warbler P bonelli with three records, River Warbler Locustella fluviatilis with seven, Radde's Warbler Phylloscopus schwarzi with eight and Buff-breasted Sandpiper C subruficollis with 11, and for Olive-backed Pipit Anthus hodgsoni with (at least) 19 individuals.

Systematic list of records

Ross's Goose / Ross' GansAnser rossii 0,12,0 2010 11-14 March, Johannes Kerkhovenpolder, Breebaartpolder and surroundings, Delfzijl, Groningen, white morph, photographed (G Kiekebos et al); 21 March to 22 May, several sites around Lauwersmeer, Dongeradeel/De Marne, Friesland/Groningen, white morph, photographed (A Borhem, T Janssen, J Bosma et al).1988 20 January to 27 February, Wissenkerke, Noord-Beveland, and Middelplaten, Goes, Zeeland, two adults, white morph, photographed (J Tramper et al).All reports concern date extensions for birds previously accepted for 20 January to 15 February 1988 (two individuals in Zeeland; van den Berg & Bosman 2001), for 12 March 2010 (Johannes Kerkhovenpolder) and for 23 April 2010 (Ezumakeeg, Lauwersmeer), respectively (Ovaa et al 2012). The birds in 1988 were the second and third for the Netherlands, which returned for several consecutive winters. The other birds mentioned here are considered to be the same as those seen during the winter of 2009/10 (Ovaa et al 2012).

Ring-necked x Tufted Duck / Ringsnaveleend x KuifeendAythya collaris x fuligula 0,8,05 February to 19 March and 16 December to 9 February 2013, Natuurplas Breeveld and Woerden, Woerden, Utrecht, adult male, photographed (J de Bruijn, H Russer et al).This individual is considered to be a returning bird, recorded at this location for the first time on 6 December 2007 (Ovaa et al 2009).

White-headed Duck / WitkopeendOxyura leucocephala 5,13,017 December 2011 to 24 February, Reeuwijkse Plassen, Reeuwijk, Zuid-Holland, first-winter, photographed (Dutch Birding 34: 68, plate 89, 2012); 12-19 March, Bleeke Heide, Chaam, Alphen-Chaam, Noord-Brabant, adult female, photographed (M-J van Gestel, J van Gestel et al).The bird at Bleeke Heide is considered to be one of the two individuals that stayed at this site two years earlier, from 24 March to 2 April 2010 and on 6-9 April 2010 (Ovaa et al 2011).

Bufflehead / BuffelkopeendBucephala albeola 0,2,127 September 2011 to 26 May and 17 September to 3 May 2013, Gaatkensplas and surroundings, Barendrecht, Zuid-Holland, adult male, photographed (B de Jong, P Sintnicolaas et al); 9-23 April, Philipsdam, Schouwen-Duiveland, Zeeland, second calendar-year male, photographed, videoed (M Hoekstein, P A Wolf, M Berlijn et al).The returning adult male stayed at Barendrecht for its ninth consecutive winter. The young male at Philipsdam may have been the same as the first-year bird that wintered in Cornwall, England (26 October 2011 to 4 March 2012), or the bird seen in Lincolnshire, England, on 27 April (Hudson & the Rarities Committee 2013). Note that the two birds in England were accepted as different birds based on differences in head markings and that they were not confidently sexed (Cornwall bird) or sexed and aged (Lincolnshire bird; Hudson & the Rarities Committee 2013).

Baikal Teal / Siberische TalingAnas formosa 8,3,02011 11 February, Thoornpolder, Noord-Beveland, Zeeland, male, photographed (M Hoekstein, O Boeren, P A Wolf et al; Dutch Birding 33: 148, plate 159, 2011).This male stayed only briefly and was therefore seen by just a handful of birders. The CDNA decided that the photographs in combination with the fact the bird walked on short grass showing the legs very well was enough to establish that it was unringed.

Atlantic Great Cormorant / Grote AalscholverPhalacrocorax carbo carbo 7,41,-2008 5-16 January, Hoornse Meer, Groningen, Groningen, maximum of two (on 5-6 January), second-winter, photographed (R Winters et al). This concerns a correction of the information given in Ovaa et al (2012), in which birds were reported for this site on 5-6 and 16-30 January. This taxon is no longer considered since 1 January 2009 but the CDNA still welcomes reports from before this date.

Cory's/Scopoli's Shearwater / Kuhls/Scopoli's PijlstormvogelCalonectris borealis/diomedea 0,9,02011 9 August, Nes, Ameland, Friesland (M Olthoff).There have been five records of Cory's C borealis, none of Scopoli's C diomedea and nine of Cory's/Scopoli's Shearwater so far. Scopoli's Shearwater has been recorded in England and Poland, so that species could also occur in Dutch waters. Cape Verde Shearwater C edwardsii has not yet been recorded in north-western European waters; however, it has reached not only the Selvagens (Fagundes et al 2012) but also Atlantic waters off North America (Patteson & Armistead 2004), so it may be a conceivable vagrant in the North Sea as well.

Short-toed Snake Eagle / SlangenarendCircaetus gallicus 3,68,-2011 7 May, Kinderdijk, Nieuw-Lekkerland, Zuid-Holland, adult, photographed (B van de Wetering, A Clements, R Slagboom et al).2010 16 July, Leusbroekerweg, Leusden, Utrecht, photographed (R Jousma); 9 October, De Banjaard, Noord-Beveland, Zeeland, adult, photographed (M Hoekstein, I Meulmeester, N de Schipper).The bird at Leusden in 2010 was erroneously mentioned for 2011 in the previous report (Ovaa et al 2012). The bird at De Banjaard was the same individual as the one recorded c 70 min earlier 21 km north-north-east at Ouddorp, Zuid-Holland (Ovaa et al 2012). This species is no longer considered from 1 January 2012 onwards but the CDNA still welcomes reports from before this date.

Pallid Harrier / SteppekiekendiefCircus macrourus 5,76,-2011 10 September, Westkapelle and surroundings, Veere, Zeeland, juvenile, photographed (C Beeke, P Goedbloed et al); 17 September, Brobbelbies Noord, Landerd, Noord-Brabant, juvenile, photographed (T Janssen); 7 October, Kinderdijk, Nieuw-Lekkerland, Zuid-Holland, juvenile, photographed (J Hamelink et al); 14-16 October, Rottumerplaat, Eemsmond (M Zekhuis, M Hottinga, E Wanders et al), and 16-17 October, Rottumeroog, Eemsmond, Groningen, juvenile female, photographed (M W Kaales).The total number accepted for 2011 is now 30. The bird at Brobbelbies Noord was seen in the municipality of Landerd, not Bernheze as mentioned in Ovaa et al (2012). The juvenile female seen on Rottumerplaat on 14-16 October was also seen on the neighbouring islet of Rottumeroog on 16-17 October (and not on 18 October as stated in Ovaa et al 2012). This species is no longer considered from 1 January 2012 onwards but the CDNA still welcomes reports from before this date.

Baillon's Crake / Kleinst WaterhoenPorzana pusilla 171,57,-Justin Jansen and Gerald Oreel conducted a full revision of all reports and records of this species from 1800 to 2006 (from 2007, the species is no longer considered); the results were published in Jansen (2013). During 1976-2006, the species was considered by the CDNA but the pre-1976 records had not been revised. In the revision, 265 records were reviewed: 110 records were (re)accepted (including several breeding records) and 155 records were not accepted. The number of accepted individuals was 228 (including pulli). The monthly distribution was as follows (based on the first record date): April (one), May (26), June (35), July (11), August (17) and September (seven). From 13 breeding records, the month is unknown but it was assumed that these birds were found in May-June. The years with the highest number of individuals were: 1857 (18), 1858 (10), 1862 (six), 1898 (five), 1957 (seven), 1958 (eight), 1964 (10), 1965 (10), 1971 (11), 1975 (nine) and 2005 (17). The CDNA decided to adopt all decisions published in Jansen (2013). To avoid double use of space, we refer to this paper and the list of records (accepted and non-accepted) therein.

Little Bustard / Kleine TrapTetrax tetrax 32,11,115 January, Verdronken Land van Saeftinge, Hulst, Zeeland, photographed (A Wieland, P L Meininger et al; Dutch Birding 34: 53, plate 57, 2012).This bird stayed for just one afternoon and was superbly photographed, resulting in the best photographs ever taken of this species in the Netherlands. It was only the third in the new millennium, after birds on 7 April 2000 and 3 September 2011; in 1980-89, five birds were accepted and, in 1990-99, four.

Great Bustard / Grote TrapOtis tarda -,26 (since 1986),01987 21 March, Camperduin, Bergen, Noord-Holland (J W de Roever, M Platteeuw, W E M van der Schot et al; cf Platteeuw et al 1994).This concerns a date correction; the record was previously published for 28 March (cf van den Berg & Bosman 2001). The bird was seen by a group of seabird migration observers when it came flying in from the North Sea.

Cream-colored Courser / RenvogelCursorius cursor 3,1,01844 c 18 October, 's-Graveland, Wijdemeren, Noord-Holland, first calendar-year, shot, skin retained at Naturalis Biodiversity Center at Leiden (via R J J Vlek; Dutch Birding 34: 356, plate 493, 2012).This record was already mentioned in Ovaa et al (2012). Contrary to what was stated there, the original article about this record was published in the Amsterdamsche Courant on 21 October 1844. During the next week, seven other Dutch newspapers paid attention to this rare bird (Ruud Vlek in litt).

Collared Pratincole / VorkstaartplevierGlareola pratincola 5,18,123 May, Wormer- en Jisperveld, Wormerland, Noord-Holland, adult summer, photographed (R E Brouwer; Dutch Birding 34: 203, plate 270, 2012).The bird was found by a single observer doing a bird survey in the heart of a vast marsh area, from where he could not distribute the news on time for others to see it.

Great Snipe / PoelsnipGallinago media -,37,02010 5-6 April, Bergschenhoek, Lansingerland, Zuid-Holland (J Mudde).The earliest spring record since 1977 (before 1 January 1977, the species was not considered); only three more were found in April, on 10 April 1999, 15 April 1998 and 30 April 1987.

Bonaparte's Gull / Kleine KokmeeuwChroicocephalus philadelphia 0,4,13 May, Razende Bol, Texel (T Zutt, R Hovinga, J van Dijk), and 4-18 June, Robbenjager and surrounding area, De Cocksdorp, Texel, Noord-Holland, first-summer, photographed, videoed (H Wien et al; Ebels & Hovinga 2012; Dutch Birding 34: 187, plate 240, 203, plate 272, 238, plate 320-321, 239, plate 322-324, 2012). This fifth for the Netherlands was long overdue. The previous twitchable one was in February 1990 and with an individual briefly present in April 1994, not many expected that it would take 18 years before the next one would turn up. When this individual was seen off Texel on 3 May, hopes were high that it would be refound on the island itself, where it finally turned up a month later, seen by many birders during its two-week stay (Ebels & Hovinga 2012).

Ring-billed Gull / RingsnavelmeeuwLarus delawarensis 0,8,123 February, Maasbracht, Maasgouw, and 7-13 March, Roosteren, Echt-Susteren, Limburg, adult, wearing colour-ring, photographed, videoed (J Nagtegaal et al; Dutch Birding 34: 132, plate 187, 2012).This bird was wearing a red colour ring with white inscription PAA3 on its right tarsus. It turned out to be a bird trapped and ringed at Szczecin-Klucz, Zachodniopomorskie, Poland, in January 2005. This was the first recovery of this bird outside Poland. The bird was also seen across the border in Belgium in February-March (cf Dutch Birding 34: 183, plate 231, 2012).

* Sooty Tern / Bonte SternOnychoprion fuscatus 0,0,131 August, Maasvlakte, Rotterdam, Zuid-Holland, adult, photographed (B van den Broek; van den Broek & Ebels 2012; Dutch Birding 34: 303, plate 409-414, 2012).This bird was seen and photographed by a single observer. It was flying west (out to sea) at a distance of c 300 m and could be observed for less than one minute, during which six photographs were taken. The species is a very rare vagrant in north-western Europe, mostly in summer.

Roseate Tern / Dougalls SternSterna dougallii 3,32,0 2011 18-20 June, Westkapelle, Veere, Zeeland, maximum of two (on 19 June), adult summer, photographed, videoed (H Reijnhoudt, P A Wolf et al).Although two individuals were reported, the CDNA did not receive proof that two were present and, at first, only one was accepted (Ovaa et al 2012). However, additional video footage was submitted in early 2013 that convincingly showed two individuals on 19 June.

Whiskered Tern / WitwangsternChlidonias hybrida 257,102,-1995 10-16 May, Molenplaat, Bergen op Zoom, Noord-Brabant (P A Wolf, P L Meininger, S Lilipaly).This species is no longer considered since 1 January 1996 but the CDNA still welcomes reports from before this date.

Black Guillemot / Zwarte ZeekoetCepphus grylle 31,63,-1992 25 September and 7-10 October, Egmond aan Zee, Bergen, and 10, 11 and 13 October and 18-25 October, Camperduin, Bergen, Noord-Holland, first-winter (N F van de Ham, L Stegeman, K J Eigenhuis et al).1982 13-31 December 1981, Brouwersdam, Goedereede, Zuid-Holland, and 14 January, Middelplaat, Brouwersdam, Schouwen-Duiveland, Zeeland, adult winter (H de Jongh).These are date extensions for birds mentioned in earlier reports (cf van den Berg & Bosman 2001). The bird in Noord-Holland in the autumn of 1992 was also present on 11 and 13 October near Camperduin. The 1982 record concerns a date extension for a bird already accepted for 13-31 December 1981 at the Zuid-Holland side of Brouwersdam. This species is no longer considered since 1 January 2007 but the CDNA still welcomes reports from before this date.

Eurasian Pygmy Owl / DwerguilGlaucidium passerinum 0,6,12 August, Holwerd, Dongeradeel, Friesland, photographed (R-J van der Leij, M de Vries; Dutch Birding 34: 336, plate 465, 2012).This bird was photographed between parked cars at the ferry harbour and had probably just arrived. After it flew off, it could not be relocated. It concerns the seventh record and the sixth for the north of the country.

Boreal Owl / RuigpootuilAegolius funereus 34,25,325-30 May, Veluwezoom, Rheden, Gelderland, singing, sound-recorded (R Stolk, H Damen, B Rijksen et al); 3 October, Rijkerswoerd, Arnhem, Gelderland, immature, photographed (J Goed, M Goed); 30 October, Gelredome, Arnhem, Gelderland, photographed, taken into care, released late November (per R Wester).The bird on 3 October was photographed perched on the ground in a city garden. Despite an extensive search the next day, it was not refound. The bird on 30 October was found near the soccer stadium and was brought to animal recovery centre Stichting Opvang Noach in Halle, Gelderland. It was released in good health three weeks later at an undisclosed site. The CDNA considers it another individual than the bird seen on 3 October, also in Arnhem.

Calandra Lark / KalanderleeuwerikMelanocorypha calandra 0,5,02011 29 April, Sallandse Heuvelrug, Nijverdal, Overijssel, photographed (A Hegemann, P ten Den, H A H Jansman).The bird was found during research on the ecology of the last (and very small) population of Black Grouse Tetrao tetrix in the Netherlands; it was seen for just 10 min.

Pallas's Leaf Warbler / Pallas' BoszangerPhylloscopus proregulus 9,83,-1983 2 October, Den Haag, Zuid-Holland, photographed (M Roos, H Harmsen).This species is no longer considered since 1 January 1997 but the CDNA still welcomes reports from before this date.

Western Bonelli's Warbler / BergfluiterPhylloscopus bonelli 5,28,32 May, Westervoort, Westervoort, Gelderland, singing, photographed, sound-recorded (R Wester, F Wagenaar, R Stolk et al; Dutch Birding 34: 207, plate 280, 2012); 21-22 May, Grenspark De Zoom-Kalmthoutse Heide, Woensdrecht, Noord-Brabant, singing, photographed, sound-recorded (B Goyens, G Vermeersch et al); 10 June to 9 July, Veluwezoom, Rheden, Gelderland, singing, photographed, sound-recorded (B van Balen et al; Dutch Birding 34: 267, plate 368, 2012). The only other year with three birds was 1994. The bird at Woensdrecht was also observed at Kalmthoutse Heide, Antwerpen, Belgium; it was singing exactly on the border between Belgium and the Netherlands. On 30 June, the long-staying individual at Veluwezoom was feeding young in a nest. Never during the period, two Western Bonelli's Warblers were seen, so this bird was probably paired with another Phylloscopus species, or it was feeding as a helper at a nest, of which it was not a parent.

Siberian Chiffchaff / Siberische TjiftjafPhylloscopus collybita tristis -,39,-Genetic analysis of mist-netted birds at several ringing stations at coastal sites in the Netherlands showed that this taxon was much more common than previously thought (de Knijff et al 2013). This taxon, therefore, is no longer considered by the CDNA from 1 January 2012. In addition, also earlier reports will not be considered anymore, as the strict criteria used previously would be in disparity with recently developed, less strict criteria.

Wallcreeper / RotskruiperTichodroma muraria 0,2,06 March, ENCI-groeve, Pietersberg, Maastricht, Limburg, photographed (N Rensen, W Schep, F Oling et al; Dutch Birding 34: 118, plate 160, 2012).In 2010, one stayed here from 22 November to 11 December (Ovaa et al 2011), and it was seen again by a few lucky birders on only one day in March 2012. It is considered to be the same bird, as consecutive returns to sites away from the regular wintering areas are well known for this species. The lack of more reports in the winter of 2011/12 may be explained by the fact that this is a large and mostly inaccessible quarry, where it may be very difficult to (re)find such a small bird.

White's Thrush / GoudlijsterZoothera aurea 11,7,01952 c 19 (18, 19 or 20) November, Den Burg, Texel, Noord-Holland, male, found dead (specimen retained at Ecomare, De Koog, Texel), photographed (per P Duin).This record was listed in van den Berg & Bosman (2001) for 9 April 1953 but research by Pieter Duin revealed a report of this bird in the local newspaper (Texelse Courant) of 22 November 1952, stating that the bird had been found dead a few days before; the bird was mounted in April 1953.

Black-throated Thrush / ZwartkeellijsterTurdus atrogularis 0,7,111 November, Katwijk aan Zee, Katwijk, Zuid-Holland, male (R Hofland, N Aarts, G van der Bent et al).This must be one of the dream birds to see whilst counting birds on migration. This fine male flying past was seen and described well enough by all observers to rule out other thrushes.

Stejneger's Stonechat / Stejnegers RoodborsttapuitSaxicola stejnegeri 0,0,0A report at Robbenjager, Texel, Noord-Holland, on 8-23 October is still under review. Remarkably, this same individual (established by a series of feather details visible on photographs) was relocated at Portland Bill, Dorset, England, on 24 October where it was trapped and stayed until 26 October. DNA analysis indicated this bird to be a Stejneger's Stonechat. It was accepted as such by the British rarities committee and now awaits formal admission to the British list (cf Kok 2012, Hudson & Rarities Committee 2013).

Siberian Stonechat / Aziatische RoodborsttapuitSaxicola maurus maurus 9,32,113-15 October, Slufter, Texel, Noord-Holland, first calendar-year male, photographed (F van der Lans, F van der Lans, J Kleijweg et al).A bird at Stengweg ('Tuintjes') near De Cocksdorp, Texel, Noord-Holland, on 25 October (according to the observer a bird different from the Stejneger's Stonechat S stejnegeri that stayed nearby until 23 October) has not (yet) been submitted. All birds accepted up to 2012 are provisionally listed as S m maurus but a revision will be necessary to exclude Stejneger's Stonechat S stejnegeri (now considered a full species, previously S m stejnegeri) or to accept them as Siberian/Stejneger's Stonechat.

Pied x Eastern Black-eared WheatearOenanthe pleschanka x melanoleuca 0,0,0A report of a first-summer male photographed on Texel, Noord-Holland, on 21 May is still under review.

Rustic Bunting / BosgorsEmberiza rustica 14,69,-2008 3 October, Rottumeroog, Eemsmond, Groningen, female or first-winter, photographed (J van der Weele).This species is no longer considered from 1 January 2009 but the CDNA still welcomes reports from before this date.

Systematic list of rejected reports

This list contains all records not accepted by the CDNA. Records marked with @ were rejected by all committee members in the first or second voting. Most records were rejected because the identification was not fully established (often due to lack of documentation) or when the bird showed signs of captivity, such as dubious rings, excessive wear and/or aberrant behaviour. Species, for which the CDNA unanimously decided that all records up to and including 2012 refer to birds of captive origin, are indicated with an asterisk (*). This included records of birds of which all ancestors are assumed to be of captive origin (introduced species of British category C).

2009 Arctic Warbler / Noordse BoszangerPhylloscopus borealis 26-27 September, Robbenjager, Texel, Noord-Holland, photographed, videoed (documentation shows wing-barred Phylloscopus, probably Greenish Warbler P trochiloides or Two-barred Warbler P plumbeitarsus, but photographs, video images and descriptions were considered not conclusive and described sound appeared to be at odds with both species; the observation has recently been resubmitted as Two-barred, accompanied by detailed analysis of all available documentation).

1987* Spur-winged Lapwing / Sporenkievit Vanellus spinosus 20 October, De Groede, Terschelling, Friesland, photographed (@ probably one of two birds wandering through the Netherlands at the time and known to have escaped from captivity).

1800-2006For the revision of Baillon's Crake / Kleinst WaterhoenPorzana pusilla records for the period 1800-2006, see Jansen (2013); in total, 155 individuals (out of 265) were not accepted, including several multiple reports and breeding reports. Not all rejected reports listed had been accepted in the past, because many previously unknown reports traced by the author were included in the revision. All decisions published in Jansen (2013) have been adopted by the CDNA and are not repeated here.

Acknowledgements

The CDNA wishes to thank Bram Rijksen who kindly provided the drawing of the Caspian Stonechat on p 357. The editors of Dutch Birding assisted in checking record details.